What is the length of the longest side of a triangle that has vertices at (-4,2), (-4,6), and (4,2)?

Me write an equation for the interior angles of this triangle that uses the triangle sum theorem

Andy has $310 in his account. each week, w, he withdraws $30 for his expenses. which expression could be used if he wanted to find out how much money he had left after 8 weeks?

Use stokes' theorem to evaluate c f · dr where c is oriented counterclockwise as viewed from above. f(x, y, z) = xyi + 5zj + 7yk, c is the curve of intersection of the plane x + z = 8 and the cylinder x2 + y2 = 81.